Channelization design optimization method for parallel flow intersection

Abstract

The invention relates to a channelization design optimization method for a parallel flow intersection. The method comprises the steps of: (1) calculating an optimal signal timing period of a signal intersection and a related intersection signal timing scheme based on road geometric parameters, hourly traffic flow and the like; (2) using the propagation law of traffic flow to derive the queue length of traffic flow; (3) calculating an intersection coordination phase difference by combining a traffic flow conflict theory and a signal intersection group green wave coordination control method; (4) calculating a maximum value of a shift transition section; (5) calculating a value range of the shift transition section by considering safe operation requirements of lane changing vehicles; and finally, integrating the value ranges of the step (4) and the step (5), and obtaining an intersection to obtain the value range of the parallel flow intersection shift transition section. The method is a novel intersection channelization design method taking safe and smooth operation as a primary target, is especially suitable for plane signal intersections with relatively large left turn flow and relatively symmetrical traffic demands, and can effectively improve the traffic capacity of the signal intersections, reduce vehicle delay and relieve traffic jams.

Description

technical field [0001] The invention relates to the technical field of traffic organization, in particular to a channelization design optimization method for parallel flow intersections. Background technique [0002] Road intersections are the bottleneck of urban traffic, especially signalized intersections with high load levels. In order to alleviate traffic congestion at intersections, domestic and foreign scholars have proposed some improvement measures, such as setting reverse variable lanes or tidal lanes, pre-signal control or signal green wave coordinated control, etc. However, at some signalized intersections with large left-turn traffic volume, due to the limitation of time and space resources, the improvement effect of traditional congestion control measures is obviously insufficient. New and more effective improvement measures need to be proposed according to local conditions, and the design of parallel flow intersections has emerged as the times require. [0003...

AI Technical Summary

Problems solved by technology

There is a lack of calculation methods for the length of the shifted transition section and the corresponding overall intersection channelization design and signal coordination control scheme in the research of parallel flow intersections

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